Appaeatus



l .(Np Model.)

P. SHIGKLE.

PIPE MOLDING AND CASTING APARATUS.

Attest.'

N. PETERS. Pmwlilhognnher, Washingkm. D, C.

4Uivirii) STATES PATENT OFFICE.

FREDERICK SHICKLE, OF ST. LOUIS, MISSOURI, ASSIGNOR OF TWO-THIRDS TOJOHN W. HARRISON AND THOMAS HOWARD, BOTH OF SAME PLACE.

PIPE MOLDING AND CASTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 255,891, dated April 4,1882.

A Application med Novemtererieal. (No model.)

To all whom fit may concern:

Be it known that L FREDERIGK SnIcKLn, of St. Louis, Missouri, have madea new and useful Improvementin Pipe Molding and Oasting Apparatus, ofwhich the following is a full, clear, and exact description, referencebe- Aing had to the annexed drawings, making part of this specification,in which- Figure l is a side elevation of the improved 1o flask; Fig. 2,aplan of the parts shown in Fig. 3; Fig. 3, a side elevation of theparts shown in Fig. 2, being the upper end of the flask and pattern;Fig. 4, a vertical section taken on the line a: x of Fig. 2; Fig. 5, ahorizontal section taken on the line m x of Fig. 6, a portion beingbroken away; Fig. 6, a side elevation ofthe lower end of theiask, andshowing the temporary bottom in position; Fig. 7, a vertical sectiontaken through the upper end 2o ofthe flask and core; Fig. 8, a plan ofthe fiask as ready for casting; Fig. 9, a side elevation of thetemporary bottoni and supporting-stand; Fig. l0, a vertical sectiontaken through the lower end of the flask upon the z5 line x .r of Fig.5, showing the pattern and other parts as for casting, and Fig. 11 a ventical section taken on the line x .'v, Fig. 5, through the lower end ofthe apparatus, the parts being as when the sandis being rammed.

` 3o The same letters denote the same parts.

To provide an improved liask and apparatus for molding. andcasting pipesthe bell end downward is my present aim.

It relates partly to the construction of thel flask at the lower end,partly to the apparatus employed in forming the lower part of the mold,partly to the means used in formingthe upper part of the mold, andpartly to the means used at the upper end of the flask in casting thepipe.

In the drawings,A represents the improved flask, having the shell orbody a, the flange n at the upper end ot' the body mand thepart a2 atthe lower end of the part a, and being the partimmediately used inmolding the bell of the pipe. The sand in this part ot' the ask asheretofore made cannot be rammed from the top of the flask, andtherefore it has been customary to ram it separately in apart which,

5o for the time being, is detachedfrom the main portion of the ask, andafterward to attach it to the'main portion of the Iiask and complete therammingfrom thetop oftheilask. In thepreseut construction the part aispermanentlyattaohed to the body a ofthe liask, and it is made as 55shown in Figs. l, G, 10, and ll, being in diamr eter sufficiently largeformolding that end of the pipe, and consisting of a base, a3, and` aflange, a4, that extends upward pastthe lower end of the shell a, and atits upper end being 6o larger in diameter than the shell a, butcounected therewith by the ties a5. Between the ties are openings as,through which. the sand and therammingimplements oanbeintroduoed. Theparts a. a' a2 are thus permanently con- -65 nected, and inpracticeswing as one piece.A and in the usual manner, upon the pit-wallB.

O represents a temporary bottom used in forming the mold. It is`of thesize and shape j externally of the bell end of the pipe being -7omolded, and at c has a scat to receive the end d of the pattern D, andat c' c c is furnished l with lugs which project downward from the mainportion of the bottom, and are provided with studs o2 c2 c2. The lugscome inside a cir- 75 cular stand, E,and the studs@2 project through jand are arranged to workin slots ee c e ce in the stand E. The portioneof the slotsis horizontal, and thevremaining portion, e,inolined,

as shown. The stand, through the studs c2, 8o

supports the bottom O, whether in the ilask,`as

in Figs. 6 an'd l1, or detached from the flask, as in Fig. 9. To enablethe bottom to be supported in position within the iiaslr, the stand E isfurnished with ailange, c3, which is shaped4 85 to fit the base a3 andbe clamped thereto by suitable clamps, suoli as e4. The stand may haveperforations e5, for the purpose hereinaff ter explained, and handles efor liftingv it. The Hask being ready for receiving the sand, 9o thebottom C is attached thereto, as shown in Y Figs. 6, 1l, and the patternD placed in position, being dropped into place and held by its l end (lentering and resting in the seat c. The sand F is then rammed,beingintroduced and rammed tirst through the openings aiand until themold is formed to above the bell part, andthen` down from the top of theHash; A ring, G, is slipped onto the upper end of the pattern and upheldin position" by means ot v1 oo the wings g, with which the ring is.`provided, resting upon a flange, a', as seen in Figs. 2, 3,

4. The ring has a bead, g', which for the time being forms a portion ofthe pattern and enables a recess of corresponding shape to be formed inthe sand, which, as afterward explained, is made use of in forming thebead at the upper end of the pipe. The sand having been rammed up to thelevel of the ring Gr, and as shown in Fig. 4, the main pattern D iswithdrawn from the ilask, as well as thebottom C and ring G. The latterserves to keep the sand from breaking away as the pattern is lifted fromthe flask, the ring being heldin place by means ofthe clamps G G.

To prevent breaking the sand away at the lower end ofthe liask, thebottom C is notdrawn directly downward, but is first rotated a shortdistance around and then dropped, the desired movement of the bottombeing accomplished by moving the studs c2 in the slots e e', thedirection in which the latter are extended causing the bottom iirst tobe twisted horizontally sufliciently to part from the sand, and then todrop sufficiently for the bottom to bewcll clear of the part e2 of theflask. The clamps e4 are then loosened and the stand and bottom entirelydetached from the flask. The temporary bottom, pattern, and ring G beingwithdrawn from the flask, the bottom H (which to distinguish it from thetemporary bottom may be styled the permanent bottom) and the core I areattached and inserted in the iask.

The bottom H is ofthe usual description, having a suitably-shapedcoating at h to form the inside of the bell end of the pipe J, Fig. l0,and having a seat, h', to receive, guide, and hold the core I, and aflange, h2, which, by means ot'suitable fastenings, is attached to theiiange a3 of the iiask, thereby serving to hold the bottom Hin place anduphold the core I during the casting.

Before the casting is performed the core is centered at the upper end,and means' are brought intov requisition for completing that part of themold used in forming the beadjat the upper end of the pipe, and forpouring the metal into the liask and preventing the escape of the metalat the upper end of the flask, and are as follows:

K represents a baked-clay ring, which, when iii place, rests, as shownin Fig. 7, upon the ilange a encircling the core I. At its under side,next to the core, the ring is shaped, as shown, to complete that partot' the mold used in forming the upper halt' ot' thc beadj of the pipe.The projection lc on the ring also serves, by fitting into thedepression in the sand at that point, to center the ring, and ultimatelythe core. The ring K is then clamped down to the flange a', and by meansof the clamp L, which in turn consists of a band, l, having hooks l ll', made to lit and catch on the under side of the flange a', and havingprojections Z2 Z2 Z2, which project inwardly and to come above the ringK, as shown in Fig. 7. Wedges Z3 are then inserted between theprojections Z2 and ring K, holding the latter securely down in place,and so thatwhcn the metal is poured it will not, by reason of itsferrostatic force, escape or leak between 'the ring and flange.

To enable the hooks l to pass the llange a in putting the clamp L inplace, the iiange a has.

openings c7,t11rougl1'which the hooks l are passed, and then the ring isturned around until the hooks are out of line with the openings al. Thering K and clamp L being in piace, a basin is formed at the top ot' themold by means of a ring, M, which rests upon the ring K. and is suitablycoated with clay, m. No sand is placed within the ring M, as the aim ofthis feature of the improvement is to provide for pouring the metal, sothat no sand shall be carried with the metal into the molda diflicultyliable to occur when a cope lined with sand is employed. Sand, however,is placed between the ring M and band l, the basin and sand m aiding inholding the ring K down in place and the sand packing the joint betweenthe rings K and M. The metal is then poured into the basin, and thenceinto the ilask, the metal running from the basin through passages 7c inthe ring K.

By not employing a sand-basin at the top of the flask, as hitherto hasbeen customary, and instead using ametallic ring, M, having simply aclay wash or lining, m, the liability ot' carrying sand or clay alongwith the molten metal into the flask is practically obviated. The ring Mis made preferably somewhat larger at the lower end, enabling the ringto be readily detached from the runner that forms in casting at the topof the ask. When the ring M is made smaller at the lower end it is madein sections m2 m2 m2, Fig. 8, to enable it to be detached from theruimer.

The turning of the bottom C in the stand E is conveniently effected byinserting a lever (not shown) in one of the perforations c5 as a fulcrumand connecting the lever and one of the studs c2 by a suitable tie-suchas a chainand then applying power to the lever.

I claiml. In a pipe-molding apparatus, the bottom C, said bottom beingrotatable horizontally and movable vertically in its support, for thepurposes described.

2. In a pipe-molding apparatus, the bottom C, said bottom beingrotatable horizontally in its support, for the purpose described.

3. In a pipemolding apparatus, the bottom C, said bottom being movableverticallyin its support, for the purpose described.

4. The combination ofthe bottom C, lia-ving the lugs c and studs c2, andthe stand E, having the slots c c', substantially as described.

5. '.Ihe ilask A, having the part a2, having openings et, for thepurpose described.

6. The flask A, having the openings a6, and the bottom G, for thepurpose described.'

7. A pipe-molding liask for molding pipes the bell end downward, havingopenings, such as a, for the purpose described.

ICO

IOS

Ils

8. The combination of the ask A, having the openings a6, the bottom C,and the stand E, substantially as described.

9. The combination of the bottom C, lugs 5 c', studs c2, andthe slottedstand E, havin g the perforations e5, substantially as described.

10. The combination ot the flask A, pattern D, and ring G, having thewings g, and bead g', substantially as described.4

l1. The combination ofthe ask A, having the flange a,the ring K, and theclamp L, substantially as described.

12. The combination of the flask A, flange a', having the openings a",the clamp L, having the band l, hooks L', and projections l2, and 15 thering K, substantially as described.

13. The combination of the flask` A, the ring vK, the clamp L, andthering M, substantialbr as described.

14. The combination ofthe flask A, the ring zo M, the band l, and thesand m', substantially

